Analysis of land use land cover changes and their impacts on the urban heat island effect in Bragança, Portugal

Almeida, Cátia Rodrigues de; Alírio, João; Gonçalves, Artur; Teodoro, Ana Cláudia

http://hdl.handle.net/10198/36856

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Autores

Almeida, Cátia Rodrigues de

Alírio, João

Gonçalves, Artur

Teodoro, Ana Cláudia

Resumo(s)

The viability of urban life requires a series of changes in Land Use Land Cover (LULC), incorporating anthropic elements at the expense of vegetated areas, changing the land cover, which affects surface albedo. One of the impacts could be the formation of an Urban Heat Island (UHI), where temperatures are higher in cities compared to the vegetated surrounding areas, especially after sunset. Remote Sensing (RS) data, such as Land Surface Temperature (LST), image classification algorithms, and vegetation indices, can be used to understand this dynamic. This research aimed to assess the sensitivity of RS products to LULC changes and evaluate the surface thermal behaviour of (Portugal) between 2016 and 2023, during summer and winter. RS was able to identify some changes in LULC and ascertain that LST, in general, was higher in anthropic areas, especially during the summer.

Palavras-chave

Google earth engine Land surface temperature Land use change Local climate zone Satellite image processing

URI

http://hdl.handle.net/10198/36856

Citação

Almeida, Cátia Rodrigues de; Alírio, João; Gonçalves, Artur; Teodoro, Ana Cláudia (2024). Analysis of land use land cover changes and their Impacts on the urban heat island effect in Bragança, Portugal. In IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2024. Athens: Institute of Electrical and Electronics Engineers, p.3242-3247